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#266: Fix NPE for empty streams.

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This commit is contained in:
Harald Kuhr 2016-06-23 13:26:58 +02:00
parent c2aa7e3150
commit 9a6096664e
2 changed files with 28 additions and 5 deletions
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7
imageio/imageio-jpeg/src/main/java/com/twelvemonkeys/imageio/plugins/jpeg/JPEGSegmentImageInputStream.java
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@ -240,16 +240,21 @@ final class JPEGSegmentImageInputStream extends ImageInputStreamImpl {
private void streamInit() throws IOException { private void streamInit() throws IOException {
stream.seek(0); stream.seek(0);
try {
int soi = stream.readUnsignedShort(); int soi = stream.readUnsignedShort();
if (soi != JPEG.SOI) { if (soi != JPEG.SOI) {
throw new IIOException(String.format("Not a JPEG stream (starts with: 0x%04x, expected SOI: 0x%04x)", soi, JPEG.SOI)); throw new IIOException(String.format("Not a JPEG stream (starts with: 0x%04x, expected SOI: 0x%04x)", soi, JPEG.SOI));
} }
else {
segment = new Segment(soi, 0, 0, 2); segment = new Segment(soi, 0, 0, 2);
segments.add(segment); segments.add(segment);
currentSegment = segments.size() - 1; // 0 currentSegment = segments.size() - 1; // 0
} }
catch (EOFException eof) {
throw new IIOException(String.format("Not a JPEG stream (short stream. expected SOI: 0x%04x)", JPEG.SOI), eof);
}
} }
static boolean isAppSegmentMarker(final int marker) { static boolean isAppSegmentMarker(final int marker) {

18
imageio/imageio-jpeg/src/test/java/com/twelvemonkeys/imageio/plugins/jpeg/JPEGSegmentImageInputStreamTest.java
View File

@ -74,6 +74,24 @@ public class JPEGSegmentImageInputStreamTest {
stream.read(); stream.read();
} }
@Test(expected = IIOException.class)
public void testStreamNonJPEGArray() throws IOException {
ImageInputStream stream = new JPEGSegmentImageInputStream(ImageIO.createImageInputStream(new ByteArrayInputStream(new byte[] {42, 42, 0, 0, 77, 99})));
stream.readFully(new byte[1]);
}
@Test(expected = IIOException.class)
public void testStreamEmpty() throws IOException {
ImageInputStream stream = new JPEGSegmentImageInputStream(ImageIO.createImageInputStream(new ByteArrayInputStream(new byte[0])));
stream.read();
}
@Test(expected = IIOException.class)
public void testStreamEmptyArray() throws IOException {
ImageInputStream stream = new JPEGSegmentImageInputStream(ImageIO.createImageInputStream(new ByteArrayInputStream(new byte[0])));
stream.readFully(new byte[1]);
}
@Test @Test
public void testStreamRealData() throws IOException { public void testStreamRealData() throws IOException {
ImageInputStream stream = new JPEGSegmentImageInputStream(ImageIO.createImageInputStream(getClassLoaderResource("/jpeg/invalid-icc-duplicate-sequence-numbers-rgb-internal-kodak-srgb-jfif.jpg"))); ImageInputStream stream = new JPEGSegmentImageInputStream(ImageIO.createImageInputStream(getClassLoaderResource("/jpeg/invalid-icc-duplicate-sequence-numbers-rgb-internal-kodak-srgb-jfif.jpg")));